ELB is Amazon's managed Load Balancer service, used in conjunction with its EC2 virtual machine cloud hosting service.

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6
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1answer
161 views

Is it possible to use Kerberos over TLS through sssd?

Background I am trying to log in (via SSH, to an Amazon Linux EC2 instance running sssd) as users that I've created in my AWS Directory Services Simple AD. I am authenticating with Kerberos and ...
0
votes
0answers
13 views

Apache 2.2 Prefork generating many connections without load

I'm observing a problem where Apache 2.2 is starting up a tremendous amount of extra threads between 2:45 AM and 3:00 AM each night. I've gone through all the usual troubleshooting, and can't find a ...
0
votes
0answers
54 views

EJB Remoting Auto Scaling in AWS

I'm currently in the process of figuring out how to migrate a Java EE Middleware application from a single static server to a Load Balanced Wildfly Cluster in AWS (with an Auto Scaling Group behing an ...
2
votes
1answer
579 views

How to log original value of $remote_addr when using Real-IP

My environment has user requests passing through a number of systems: [Client] --> [ELB] ---> [nginx] --> [web] (ELB = AWS Elastic Load Balancer) Thanks to this answer, I have nginx determining and ...
1
vote
2answers
113 views

Wildcard SSL Certificate on Multiple ELBs in VPC

I am very new to installation of certificates and AWS itself altogether. Now, in my current infrastructure I have 3 ELBs that are in a VPC. I have purchased a wildcard ssl certificate from COMODO ...
0
votes
1answer
48 views

Using CloudFormation, I cannot get an AAAA record to work with ELB

I have the following two CloudFormation resources: "TestELB" { ... }, "TestRecordSetGroup": { "Type": "AWS::Route53::RecordSetGroup", "Properties": { "HostedZoneName": "example.com.", "...
0
votes
1answer
132 views

Amazon Web Services, mod_remoteip behind VPC hosted ELB occasionally sending IPv6 addresses

On Amazon Web Services, I have an EC2 instance running Apache and mod_remoteip. The instance is behind a Virtual Private Cloud (VPC) hosted Elastic Load Balancer (ELB). In the mod_remoteip config ...
1
vote
1answer
57 views

PHP sessions without an expiration period. What happens to the sticky session on the load balancer?

I'm using PHP sessions without an expiration period, using Amazon EC2 Elastic Load Balancing with Sticky Sessions.. What happens to the generated application sticky session on the load balancer? When ...
0
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0answers
22 views

AWS internal ELB security with open security group

I'm just wondering whether anyone can tell me whether there are potential security considerations with internal ELBs setup inside a VPC which has an internet gateway attached. The security group I ...
2
votes
0answers
31 views

AWS ELB: cloudwatch metric for open connections?

I'm setting up ELB, and I'm having trouble finding a suitable metric to use to adjust the size of the pool. RequestCount doesn't work because some requests are much cheaper than others. Latency ...
0
votes
1answer
285 views

AWS ELB+Reverse Proxy (Nginx)+ELBs: Force SSL

I've reviewed/attempted prior suggestions found on the web to no avail. I currently have an ELB setup in front of my Nginx reverse proxy which then passes traffic onto 3 distinct ELBs which reside in ...
0
votes
1answer
81 views

ELB reports backend_status_code of “0” for some requests

I found some weird entries in my ELB logs that I can't really explain. They all look like this (parsed into JSON): { "backend": "-", "backend_processing_time": "-1", "backend_status_code":...
0
votes
1answer
95 views

ELB is as slow as its Idle Connection Timeout setting

I'm trying out ELB with a minimal configuration (HTTP 80 -> 3000), and for one just one EC2 instance. (I know that normally one would put at least two EC2 instances, but I'm just assessing ELB.) I'...
0
votes
1answer
225 views

AWS - ELB - NTP - Unable to forward UDP Traffic?

I am trying to setup two micro-instances behind an internal ELB which will handle mundane tasks such as central logging and NTP queries, but come to realize that ELB doesn't support UDP forwarding. ...
0
votes
0answers
12 views

How to re-spawn Opsworks instances when heartbeat fails?

I have a Rails app on Opsworks with two instances. My understanding from AWS Opsworks auto-healing, load instances, and load balancer is that the ELB is monitoring the application heartbeat and will ...
1
vote
1answer
133 views

Cloudformation ELB Cloudwatch Alarms InsufficientData

I have setup a bunch of cloudwatch alarms for my service using cloudformation. All my alarms work except for the ELB alarms. They always just show insufficient data. I can go into the console and ...
1
vote
1answer
441 views

How to set up AWS Cloudfront for dynamic number of domains for a dynamic site?

THE SETUP We have a webs/wix/etc-like website management system we are trying to use with CloudFront. It has the following domains and subdomains. - ourdomain: our main website - admin.ourdomain: ...
0
votes
0answers
69 views

Elastic Load Balancer Nginx and Rails

Currently we use Elastic Load balancer which hits Nginx then finally rails (nginx and rails both run on the app server). The idea is to use the connection pooling functionality of Nginx. Do we need ...
1
vote
1answer
588 views

Grok Issue with Multiple IP's in NginX Logstash

i've got an issue with logging from my webservers, which has an elb and then a varnish layer in front of nginx layer. varnish is setup properly for X-Forwarded-For and logs come through normally with ...
0
votes
0answers
22 views

How could I dispatch the request by instances' type dynamically

How could I dispatch the request by instances' type dynamically I have a ELB contains an auto scaling group and an indenpendent ec2 machine However the indenpendent ec2 machine is t2.large and ...
3
votes
1answer
436 views

Map one AWS ELB load balancer port to balance to multiple instance ports?

Lets say I have multiple processes running on multiple EC2 instances each on different ports. Can I map a single AWS ELB to balance to any of these processes across any instance? For example, I'd ...
0
votes
1answer
65 views

Prevent AWS load balancer serving on IP address

I've configured a Amazon Webservices Load Balancer for my site. It's all good the domain name resolves to the IP address of the Load Balancer Endpoint, and on the internal LAN it communicates with my ...
2
votes
1answer
182 views

Grace Period? - AWS EC2 Container Service and Elastic Load Balancers

When an elastic load balancer (ELB) is associated with an auto-scaling group, it is possible to specify a grace period during which new EC2 instances will not be terminated even if they are marked as ...
0
votes
1answer
68 views

Migrating from nginx to Amazon ELB

I'm interested in migrating from a manually managed AWS EC2 cloud with multiple webapps to AWS ELB with auto scalling. However, I'm not sure whether a single ELB will be enough to handle my ...
0
votes
1answer
320 views

Can't access AWS ec2 instance behind elastic load balancer

I've been following lynda.com's AWS essential training and I've successfully set up an EC2 instance but when I try to put it behind a load balancer I can not access it through the ELB's public DNS. ...
0
votes
1answer
54 views

Change amazon's ELB domain name to my own domain without it changing upon resolving it

I'm trying to set my own domain name as an alias for the generated DNS by Amazon's ELB. The generated DNS is not good for me, since I've purchased a certificate for my domain (www.domain.com). ...
0
votes
0answers
186 views

Tomcat 8.0.43 not using Keep Alive

I'm trying to setup a few app servers behind Amazon's ELB and I've been getting some 504 errors that I've been tracking down. Looking at the Tomcat manager app under status, I'm seeing the following: ...
0
votes
0answers
136 views

Varnish configuration with Apache webserver in AWS ec2 free tier

I have AWS ec2 free tier where i have deployed my sample. I have configured the webserver to listen on 80 port. I am able to access the application by the below URL http://X.X.X.X/SampleApp But ...
1
vote
0answers
73 views

certificate does not match name aws private ip

Using AWS ec2 with a load Balancer and elastic IP. Im trying to add and SSL certificate but getting the following error. Certificate does not match name shop.domain.com Subject ip-172-31-19-115 ...
1
vote
1answer
318 views

ELB health checks for freshly launched EC2 instances not working

I'm trying to manually set up a load balanced environment using EC2. My instances are reachable via SSH and ping. However, as soon as I put them inside a load balancer, the instances are not able to ...
2
votes
1answer
1k views

is there a standard for chaining x-forwarded-for headers?

IETF RFC 2616 Section 4.2 allows a request to contain multiple headers with the same field-name as long as chronological order of insertion is preserved and their values can be converted into single ...
4
votes
1answer
256 views

How does nginx distribute traffic among IPs associated with an upstream DNS name?

With this configuration: upstream some_upstream { server some-elb.us-east-1.elb.amazonaws.com:80; } If some-elb.us-east-1.elb.amazonaws.com maps to 2 IP addresses, how will nginx distribute ...
-1
votes
1answer
354 views

AWS ELB SSL and Health Check Issue

I'm getting very frustrated trying to sort this issue out. We have an AWS environment that uses SSL certificates at the load balancer. We also have a rewrite rule in httpd.conf that redirects all ...
0
votes
0answers
79 views

AWS ELB and forcing Https

I have an ELB which in the first place was set to forward in this way: Protocal Port Forward-Protocol Port Http 80 Http 80 Protocal Port Forward-Protocol ...
0
votes
2answers
231 views

Cannot put application back into ELB: Instance has not passed the configured HealthyThreshold number of health checks consecutively

Putting the EC2 instance back into the ELB used to work 90% of the time. Unfortunately lately the deployment regulary fails with the next error: 15:51:59 TASK: [Start the app] ************************...
0
votes
1answer
74 views

Is it possible to use an Elastic Load Balancer on an IIS Server accepting BITS Uploads?

I have a website hosted on EC2 using IIS 8.5. I've got a virtual directory with BITS uploads enabled, and everything works over http and now https when my URL points to the instance's public EIP. The ...
-1
votes
2answers
585 views

How to set “server preference” for tls cipher suites?

Mozilla has a tool to generate server configurations at Mozilla SSL Configuration Generator. For Amazon Elastic Load Balancing (ELB), the configuration does not appear to have a setting for "use ...
0
votes
1answer
528 views

Retrieve clients geolocation info from AWS ELB?

Forgive me if this question is in the wrong place; had difficulty deciding whether this belongs on SO or SF. Since I'm not asking for code, I guess here would be the best place. We want to be able to ...
0
votes
1answer
21 views

With PROXY support enabled in ELB, are occasional non-PROXY connections to the EC2 instance still possible?

We have PROXY protocol support enabled on our ELB but we seem to be occasionally getting non-PROXY TCP connections to the EC2 instance behind the ELB. The instance's Security Group only allows ...
0
votes
2answers
548 views

How to run a java jar file on Elastic bean stack

Currently I am using elastic beanstack for drupal application and choose the “Web Server” environment it is pre-defined configuration that uses PHP 5.5 with Apache. I need to deploy the java API ...
1
vote
2answers
363 views

How do we check ELB **own** instance health/connectivity?

Please note that this question is about ELB itself, not EC2 instances behind ELB Situation We have experienced the following ELB issue recently: 50% of requests were did not reach our backend and ...
4
votes
1answer
200 views

What's a good load balancer check for puppet master

We are running a couple of Puppet Master version 3.7 (Not PE) on AWS EC2 instances behind an Elastic Load Balancer (mainly for high availability). Currently the load balancer's check is just TCP ...
0
votes
2answers
850 views

ELB Https with HTTP on backend using Tomcat without nginx or haproxy

I want to setup ELB to terminate SSL at load balancer and communicate with backend instances over HTTP. I have uploaded valid certificate on ELB. When I set up following configuration ELB - HTTPS ...
1
vote
0answers
470 views

AWS cloudfront with SNI + ELB with 443 to 80 redirection to EC2 issue

I have configured web server front ending with AWS ELB and CloudFront. I have deployed SSL certificate on load balancer (ELB) for HTTPS connection. We have set up 2 listener protocols: Source -> 80 ...
6
votes
3answers
3k views

The site is using outdated security settings that may prevent future versions of Chrome from being able to safely access it

We're using an AWS ELB to do SSL termination and are having an issue where Chrome is displaying "https" in red with a strikethrough. It says "The site is using outdated security settings that may ...
1
vote
2answers
118 views

Can we launch website without AWS Load Balancer?

I've requirement that I want to publish a small web CMS in a CLOUD environment. Therefore I thought since I've a AWS account and go for it, but my client does not want bear any high cost. So I'm ...
0
votes
1answer
63 views

Configure a transparent Elastic Load Balancer

I want to create an Elastic Load Balancer in front of my SSL site which simply passes through ports 80 and 443. I do not want my Elastic Load Balancer to have an SSL certificate of its own, I just ...
0
votes
1answer
528 views

Do I need “A record” for AWS ELB while I set up CNAME?

I register the domain through GoDaddy. And now i have a AWS EC2 server behind a ELB. I read the document from AWS about setting up the CNAME. which I did. www CNAME elb.aws.address while ...
0
votes
2answers
133 views

1and1 domain redirected to Amazon ELB: 1and1 free email accs management

The web is behind an elastic load balancer in Amazon. I registered the domain with 1and1 which offers 10 free email accounts for the domain so I don't have to care about email servers for the moment. ...
0
votes
2answers
4k views

Redirect loop when forcing HTTPS

I am using the following to force HTTPS on my main website. ### Force SSL RewriteCond %{HTTPS} !=on RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] If you want to view the full htaccess ...